Zinc plating prevents corrosion of the protected
metal by forming a physical barrier, and by
acting as a sacrificial anode if this barrier is
damaged. When exposed to the atmosphere, zinc
reacts with oxygen to form zinc oxide, which
further reacts with water molecules in the air
to form zinc hydroxide. Finally zinc hydroxide
reacts with carbon dioxide in the atmosphere to
yield a thin, impermeable, tenacious and quite
insoluble dull grey layer of zinc carbonate
which adheres extremely well to the underlying
zinc, if undisturbed, can act as a barrier to
further oxidation.

We zinc plate to ASTM B633 Type I and Type II,
with Clear or Yellow Chromate Conversion.